Rolls for rolling angle-shaped slot-rails



(No Model.)

P. COLLEY.

ROLLS POR'RQLLING ANGLE-SHAPED SLOT RAILS. No. 387,148. Patented July31, 1888.

ETERS, PhMo-Lilhogmpher. Walhinglom D. (l

UNITED STATES PATENT OFFICE.

FREDERICK OOLLEY, JOHNSTOIVN, PENNSYLVANIA, ASSIGNOR TO THE JOHNSONSTEEL STREET RAIL COMPANY, OF KENTUCKY.

ROLLS FOR ROLLING ANGLE-SHAPED SLOT-RAILS.

SPECIFICATION forming part of Letters Patent No. 387,148, dated July 31,1888.

(N0 model) To all whom it may concern.-

Be it known that I, FREDERICK OoLLEY, of J 0hnstown,in the county ofCambria and State of Pen nsylvania,haveinvented new and useful Rolls forRolling Angle-Shaped Slot-Rails, which invention is fully set forth andillustrated in the following specification and accompanying drawing.

The object of this invention is to provide a set of rolls for rollingslot-rails for cable railways of the form hereinafter described.

The invention will first be described in detail, and then particularlyset forth in the claim.

The accompanying drawing, consisting of a single figure, illustrates apair of rolls, the upper one indicated by the letter U and the lower bythe letter L.

Said rolls contain six passes, (indicated in the drawing by the letters1 to 6, inclusive.)

In operating said rolls the hot metal is handled and affected by therolls in the following manner: The billet, of any suitable form, isfirst entered and run through pass No. 1. Then it is turned over beforeentry into pass No. 2, when, after being run therethrough, it issuccessively rolled Without being again turned, until it is finally runthrough the final pass, No. 6. During the course of this rolling themetal is so inclined in each pass as to throw the maximum of both workand spread toward the points x y in passes 1 to 5, inclusive, and theparting lines of the rolls in passes 1 to 4, inclusive, are located atthese points. In the earlier passes, in which the draft of the rolls .isthe greatest, the tendency of the metal to lap out through the partinglines is the greatest. As the wearing-line,situated at the point z ofthe finished shape of rail in pass No. 6, must of necessity be madeperfectly smooth and true, the construction just described provides forthis by causing any lap which may take place in the passes, wherein itis most likely to occur, to be thrown away from the wearing-point z ofthe metal to the outside points,a: and y,where it can do the least harm.

It will be observed that in the final pass, 6, the angle of the deliveryof the pass is changed, and the points a: and y finished partly bybending and partly by rolling, and that in pass N0. 5 an excess of metalis left in the shoulder at A, by which means sufiicient draft is broughtupon the metal at the wearing-point z to insure a well-filled-outsection of metal at this point in the final pass.

Having thus fully deset'i bed the construction and operation of my saidrolls as of my invention, I claim- A set of rolls for rolling angleshaped slotrails, having passes of the conformations respectivelyillustrated and shown in the accompanying drawing by the numbers 1 to 6,inelusive, substantially as set forth.

FRED. OOLLEY.

Witnesses:

A. MONTGOMERY, M. KIRKBRIDE.

